Research on compression behavior of coral aggregate reinforced concrete columns under large eccentric compression loading
Research on compression behavior of coral aggregate reinforced concrete columns under large eccentric compression loading
复制标题
大偏压荷载作用下珊瑚骨料钢筋混凝土柱受压性能研究
DOI：
10.1016/j.oceaneng.2018.02.037
复制
发表时间：
2018-05
影响因子：
5
通讯作者：
Wu Zhangyu
中科院分区：
文献类型：
--
作者：
Da Bo;Yu Hongfa;Ma Haiyan;Wu Zhangyu
对9根珊瑚骨料混凝土柱（CARCC）和2根普通波特兰混凝土柱（OPRCC）进行了大偏心受压试验。选取混凝土类型、混凝土强度等级和钢筋类型作为参数。研究了裂缝的发展、变形和承载力。建立了荷载-位移关系和荷载-轴向压（拉）应变关系。提出了适用于大偏心受压下CARCC极限承载力的计算模型。结果表明，CARCC的压缩行为与OPRCC相似。在相同配合比下，C25的CARCC的抗侧刚度和延性均比C35的OPRCC差。在相同荷载作用下，CARCC中钢筋分担的荷载大于OPRCC中钢筋分担的荷载。建议采用有机新涂层钢筋、3%硝酸钙缓蚀剂和C60以上混凝土强度等级，以有效抑制钢筋锈蚀，延长结构的有效使用寿命。综合考虑了钢筋锈蚀和涂层钢筋滑移对钢筋混凝土构件的影响。在此基础上，提出了大偏心受压下钢筋混凝土柱的抗剪强度计算模型.
The large eccentric compression behavior of 9 coral aggregate reinforced concrete columns (CARCC) and 2 ordinary Portland reinforced concrete columns (OPRCC) was tested. The concrete type, concrete strength grade and reinforcement type were selected as parameters. The crack development, deformation and bearing capacity were investigated. The relationships of load–displacement and load–axial compressive (tensile) strain were established. The applicable calculation model for the ultimate bearing capacity (Nu) of CARCC under large eccentric compression was suggested. The results showed that the compression behavior of CARCC were similar to OPRCC. Under the same mix proportion, the lateral stiffness and ductility of CARCC of C25 were both worse than OPRCC of C35. Under the same load, the load shared by reinforcements in CARCC was more than that shared by reinforcements in OPRCC. The application of organic new coated steels, 3% calcium nitrate inhibitor and concrete strength grade over C60 in the CARCC was suggested to effectively inhibit reinforcement corrosion and extend the effective service life of the structure. A comprehensive consideration on the effects of reinforcement corrosion and slip of the coated steel onNuof CARCC was performed. Consequently, a calculation model for theNuof CARCC under large eccentric compression was proposed.
登录
查看更多内容
DOI：
--
发表时间：
2008
期刊：
Journal of Shenyang Jianzhu University
影响因子：
--
作者：
J. Xia
通讯作者：
J. Xia
DOI：
10.2208/jsceje.65.30
发表时间：
2009
期刊：
Doboku Gakkai Ronbunshuu E
影响因子：
--
作者：
P. Wattanachai;N. Otsuki;Tsuyoshi Saito;T. Nishida
通讯作者：
P. Wattanachai;N. Otsuki;Tsuyoshi Saito;T. Nishida
影响因子：
2.7
作者：
Arumugam, RA;Ramamurthy, K
通讯作者：
Ramamurthy, K
珊瑚混凝土整体应力-应变曲线的试验研究
影响因子：
7.4
作者：
Da, Bo;Yu, Hongfa;Dou, Xuemei
通讯作者：
Dou, Xuemei
DOI：
--
发表时间：
2016
期刊：
--
影响因子：
--
作者：
Da Bo;Yu Hongfa;Man Haiyan;Zhang Yadong;Z. Haiwei;Yu Qiang;Ye Haimin;Jing Xianshuang
通讯作者：
Da Bo;Yu Hongfa;Man Haiyan;Zhang Yadong;Z. Haiwei;Yu Qiang;Ye Haimin;Jing Xianshuang